Card cover sheet aperturing apparatus



May 3, 1966 v F. A. DEDONA ETAL 3,248,986

CARD COVER SHEET APERTURING APPARATUS Filed April 18, 1963 3 Sheets-Sheet l May 3, 1966 F. A. DEDONA ETAL 3,248,936

CARD COVER SHEET APERTURING APPARATUS Filed April 18, 1963 3 Sheets-Sheet 2 Ha. /Z

May 3, 1966 F. A. DEIDONA ETAL 3,248,986

CARD COVER SHEET APERTURING APPARATUS Filed April 18, 1963 S Sheets-Sheet 5 INVENTORS. K) FEM 05 4 affld/w United States Patent 3,248,986 CARD COVER SHEET APERTURlNG APPARATUS Francis A. Dedona, Sherman Oaks, and James W. Lucas,

Los Angeles, Caiif., assignors to The Scionics (Iorporation, Canoga Park, Califi, a corporation of Caiiforma Filed Apr. 18, 1963, Ser. No. 274,025 9 Claims. (61. 83-586) The present invention relates to an aperturing machine which is particularly useful in providing an apertu-red portion in a cover sheet which 0 'erlies an apertured portion in an electric machine accounting business type card so that it may be used, for example, in mounting film on such apertured cover sheet and within the apertured portion of the card.

Briefly, the machine described herein is provided to receive a card with a cover sheet over an apertured portion of the card in an indexed position with respect to a stationary rectangular cutting element ready for aperturing of the cover sheet by a rectilinearly movable cooperating cutter assembly having four shear elements. The cutter assembly, slidably mounted in a guide is moved by a lever having one end pin connected to the cutter assembly, its other end pivoted on a stationary frame and an operating mechanism pin connected to an intermediate portion of the lever. This mechanism involves a rod having one end pin connected to such intermediate portion and having two rollers thereon each cooperating with a separate cam on a motor driven shaft that rotates about a fixed axis and extends transversely through the rod with the rod being slidably mounted on the shaft. A coil compression-spring has one of its ends seated on the other end of the rod with the other end of the spring pressing one of the rollers, which is slidable on the rod,

into engagement with one of such cams so that rotation of such one cam causes energy to be stored in the spring.

This stored energy in the spring is released when the other roller, which rotates about an axis fixed on the rod, enters an indented portion of the other cam such that the cover sheet is apertured by this previously stored energy. When and as such other roller starts to move out of such indented portion, such one cam allows said one roller to move as required to hold the spring length approximately constant during retraction of such other cam that affects the positioning of the cutter assembly. in other words, such one cam member affects essentially the compression of the spring and such other cam affects essentially the positioning of the cutter assembly and functions to allow energy stored in the spring by such one cam to be released for the cover sheet aperturing operation during which initially a spring urged frame on the cutter is pressed against the card and then, when so pressed against a stationary cutter frame, the cover sheet is apertured by the moving cutter assembly.

It is therefore a general object of the present invention to provide an improved machine of the character described.

A specific object of the present invention is to provide a cam operated cutting machine in which there is little, if any, load on the cutter positioning cam during the cutting operation.

Another specific object of the present invention is to provide a machine of this character which incorporates two cams one of which essentially affects the energy "ice power so that a relatively small motor may be used as a prime mover.

Another specific object of the present invention is to provide a machine of this character which is adaptable either for manual, or motor, or solenoid operation.

Another specific object of the present invention is to provide a machine of this character using a cutter which progressively cuts through a thin cover sheet material to allow the. stored spring energy to be released uniformly during a relatively long travel of the cutter.

Another specific object of the present invention is to provide an improved bearing structure for a rcciprocable cutter assembly.

Another specific object of the present invention is to provide an improved actuating system for a reciprocable cutter.

Another specific object of the present invention is to provide a machine of this character in which means are automatically operated for clearing the machine of the 'cut out portion of the cover sheet.

Another specific object of the present invention is to provide a machine of this character in which a single switch is used to effect energization of the machine and to effect a deenergization of the machine automatically after a predetermined angular rotation of a shaft.

Another specific object of the present invention is to provide an arrangement of this character capable of cutting extremely thin film non-rnet-allic materials which have very high tear strength such as for example Mylar which has a tendency to deform or stretch rather than to shear evenly.

Another specific object of the present invention is to provide a cutting arrangement which is essentially selfsharpening.

Another specific object of the present invention is to provide an arrangement of this character into which one or more cards may be inserted so that the operating speed advantages of multiple card aperturing during a single operating cycle may be realized.

Another specific object of the present invention is to provide a machine of this character in which there is no rigid mechanical connection between the cutting element, the driving mechanism and energy source such that neither the cutting element, mechanism nor driving motor can be damaged by an inadvertent overloading of the punch member.

Another specific object of the present invention is to provide an arrangement of this character involving an energy storage system wherein rapid linear reciprocation is accomplished in a small fraction of the total operating cycle, the larger fraction of the remainder of the cycle being used for the restoring of energy.

The features of the present invention which are believed to be novel are set forth with particularity in the appended claims. This invention itself, both as to its organization and manner of operation, together with further objects and advantages thereof, may be best understood by references to the following description taken in connection with the accompanying drawings, in which:

FIGURE 1 is an irregular sectional view taken in the direction indicated by arrows 1-1 in FIGURE 2.

FIGURE 2 is a sectional view taken as indicated generally by the arrows 2-2 in FIGURE 1 and illustrates the cutter assembly in a retracted position, a portion of the switch operating mechanism illustrated in FIGURE 4 being omitted.

FIGURE 3 is a sectional view indicated generally by the arrows 3=3 inFIGURE 5 corresponding to a condition wherein the cutter assembly is in an advanced position.

FIGURE 4 illustrates the switch and operating mechanism therefor.

FIGURE 5 is a sectional view taken substantially as indicated by arrows 55 in FIGURE 2.

FIGURE 6 is a sectional view taken substantially as indicated by arrows 6-6 in FIGURE 2.

FIGURE 7 is a view taken generally as indicated by arrows 7-7 in FIGURE 5 corresponding to the condition when the cutter is in its most advanced position.

FIGURE 8 is a perspective view illustrating a portion of the apertured frame member.

FIGURE 9 is a sectional view taken substantially as indicated by arrows 99 in FIGURE 1.

FIGURE 10 is a perspective view showing a stationary bearing member for the movable cutter assembly.

FIGURE 11 is a perspective view of a bearing member support for the movable assembly with the spring urged bearing member removed.

FIGURE 12 is a view taken substantially as indicated by the arrows 12-12 in FIGURE 1.

FIGURE 13 is a perspective view of the movable cutter assembly.

FIGURE 14 is a perspective view of the spring urged card engaging frame.

FIGURE 15 is a perspective view of the frame mountable on the movable cutter assembly.

FIGURES 16 and 17 illustrate the position of the spring stressing cam and the cutter positioning cam respectively, each corresponding to the retracted position of the cutter, i.e., cocked position wherein maximum energy is stored in the spring.

The apparatus described has a supporting frame which includes base plate 10 with two parallel spaced vertical side plates 11, 12 secured thereto and extending upwardly I hardened insert plate 34 (FIGURE 2).

therefrom, these plates being secured by screws 13. Be-

tween the upper ends of side plates 11, 12 is a frame plate 15 having a rectangular apertured portion 16 and an upper bevelled portion 18, the former for the purpose of allowing movement of a punch member therethrough and the latter for the purpose of facilitating the feeding of cards. This frame plate15 is secured to the side plates 11, 12 by dowel pins 20 and two right angle bracket members 22 and 23, the bracket member 22 being secured to the side plate 11 by bolts 25 and to frame plate 15 by screws 26 and .similarly the bracket member 23 is secured to the side plate 12 by bolts 27 and to the frame plate 15 by screws 28.

p Also mounted between the upper ends of the side plates 11, 12 and secured thereto by dowel pins 20A or other securing means is a rectangular apertured die plate 30 having the apertured portion 32 defined by outwardly tapered walls asseen in FIGURES 2 and 6 with the entrance to such apertured portion being defined by a hardened rectangularly apertured paper cutting plate 34 recessed and secured within plate 30. This plate 30 as seen in FIG- URE 2 has an upper rounded edge portion 36 to facilitate the introduction of a card and a shouldered portion 38 acting as a stop for the introduced card and also as a partial support for the card.

To provide additional support for the introduced card, there is provided a card supporting structure that includes a horizontally extending bar 40 with an upper tapered lip portion 41 and a plate 43 having a right angle bent portion 44 secured to the frame side plate 11 by screws 46, the bar 40 being secured to this plate 43 by screws 47; and as a prolongation of the plate shouldered portion 38 the frame side plate -11 has an open ended slotted portion 49 allowing introduction of the card so that the bottom edge of the card may rest on such shouldered portion 38 and the card ledge or bar 40 with a portion of the card leaning against plate 43 and contacting the stop element 42 so that 'the card is indexed with respect to the stationary cutting element 34, the stop element 42 being secured to the frame plate 15 by screws 42A as shown in FIGURE 6.

Cutting or punching of the card occurs between the hardened stationary rectangular insert 34 and a rectilinearly movable punch or cutter assembly 50 which is moved by lever 52 having its upper end pin connected to assembly 50 and its lower end pivotally mounted in bearing assembly 54 mounted on base frame plate 10, the lever 52 being actuated at a point intermediate its ends by a mechanism described later.

The cutter assembly 50 as seen in FIGURE 13 includes four cutting elements 55, 56, 57 and 58 secured in interlocking relationship shown by screws 60 to a plate 62 Whch, in turn, is secured by screws 63 to the front face of the support block 64 with the rearwardly located straight edges of the cutting elements bearing on a peripheral recessed portion of plate 62 a illustrated in FIGURE 6 and with the forwardly located cutting edges of the cutting elements being inclined with respect to the plane of such plate 62 such that adjacent ends of adjacent cutting edges are separated different distances from such plane, the smaller end of one cutting element being adjacent to the larger end of the adjacentcutting element whereby each cutting element acts as a scissors element with respect to a corresponding edge of the As shown, the support block 64 has a slotted portion 66 for accommodating the end of lever 52 and a hole 67 extending therethrough for receiving a pivot pin 69 (FIGURE 2) engaged by an open ended slotted portion 71 in lever 52. Also as seen in FIGURE 13 the support 64 has a longitudinally extending bevelled surface 70.

The cutter assembly 50 also includes an air nozzle 62A threaded in plate 62, the nozzle 62A being in communication with an angled passageway 62B (FIGURE 6) having a fitting 62C threaded therein for attachment to one end of a flexible hose 62C having its other end connected to the outlet side of an air pump 62D (FIGURE 1) which is operated after a cutting operation to produce a blast of air from nozzle 62Avto clear the machine of that rectangular portion cut out of the cover sheet.

This cutter assembly 50 is slidably mounted using the previously mentioned bevelled surface 70 on cutter block 64 as a bearing surface and against which pressure, developed by springs, is applied to urge the assembly 50 against the raised bearing surfaces 73 and 74 (FIGURE 10) respectively, on replaceable bearing blocks 81 and 83 mounted on corresponding interior sides 75 and 76 of L-shaped bearing block 77 integrally formed with a plate portion 78 for mounting on the apertured frame plate 15 by screws 79. This bevelled surface 70 on cutter assembly 50 is engaged by a bearing plate 80 (FIGURE 9) slidably recessed within an apertured portion 82 in the bearing support 84 and urged outwardly by coil compression springs 86, the bearing support 84 being secured to the apertured frame plate 15 by screws 88. For lubrication purposes the open ended aperture portion 82 may be filled with a lubricant or the plate 80 may be of self-lubricating composition.

The cutter assembly 50 mounts a spring' urged card engaging frame 90 (FIGURE 14) using the following con struction. A supporting frame 92(FIGURE 15) is secured by screws 93 on the cutter plate 62 and a pair of screws 94 passing through the frame 92 and coil compression springs 96 is threaded in the card engaging frame 90 so that such frame'may slide on the outer surfaces of the cutting elements 55-58 during operation of the machine for resiliently clamping the card against the cutter plate 34 just prior to and during the cutting operation. The lever 52 is actuated to move the cutter assembly 50 using the following construction.

Mounted on the frame side plate 11 is an electric motor 101 having mounted thereon a speed reduction unit 102 r with the output shaft 104 of this unit extending through frame plate 11, the motor-speed reduction assembly 101, 102 being secured to side plate 11 by bolts 106.

The shaft 104 has secured thereto one end of a shaft 107 as a prolongation of the same, the shaft 107 extending through elongated aligned slotted portions 112, 113 in a rod 114 and having its other end journalled for rotation in the bearing assembly 109 mounted on frame plate 12; and three cams 110, 111 and 135 are secured on shaft 107 with the cam 111 being located within a longitudinally extending slotted portion 116 of rod 114 for engagement with the spring urged roller 118 which is also in such slotted portion 116 with ends of its shaft 119 being slidably mounted in the aligned rod slots 120 and 121.

The roller 118 is pressed into engagement with earn 111 by a coil compression spring 123 around rod 114 and having one of its ends bearing against a washer 125 with a shouldered portion engaging the roller shaft 119, the other end of spring 119 bearing against a washer 127 which is adjustably supported by a nut 128 on rod 114 for adjusting the compression of spring 123.

The other cam 110 spaced from the rod 114 by spacer 130 engages the roller 132 having its shaft 134 secured to rod 114.

One end of rod 114 is bifurcated to straddle an intermediate portion of lever 52 and a pivot pin 136 secured to rod 114 provides a pivot for pivoted movement between rod 114 and lever 52. The pivot pin 136 also provides a pivot for an intermediae portion of a pump actuating arm 137 having its lower end cooperable with the movable pump actuating element or piston 62B and its upper end carrying an adjustable screw 142 therein for adjusting the spacing between such screw 143 and the stationary support bracket 23.

It will be seen from this construction that the angular position of cam 110, a cam with two diametrically disposed indented portions 138, 139 (FIGURE 7) separated by two diametrically disposed circular lobe portions 140,

141 affects essentially the positioning of lever 52 and hence the positioning of the cutter assembly with respect to the stationary cutter element 34 whereas the angular position of the other cam 111 (FIGURE 3) affects essentially the degree of compression of spring 123.

The two cams 110, 111 each being keyed to the same shaft 107 rotate as a unit in the clockwise direction in FIGURES 2, 3, 7, 16 and 17. Considering the effect of angular rotation of shaft 107 between the limits represented by the radial lines 143 and 144 in FIGURE 17, corresponding to the region between points A and B on cam 110 and between K and L on earn 111 in FIGURE 16. It will be seen that during this angular rotation the cam 110 maintains the cutter assembly in its fully retracted position shown in FIGURE 2 but that progressively more energy is stored in the spring 123. At point B, corresponding to point B on cam 110 the driving motor is automatically deenergized by means described later so that at point B, a rest position, the spring 123 is fully stressed. When and as the roller 132 leaves point B occasioned by energizing the driving motor (roller 118 now engaging point L on cam 111) and enters the indentation 138, the spring 123 being fully stressed is fully effective to cause the roller 132 to enter such indentation 138 and to advance the cutter assembly 50 towards the card and in doing so expends energy previously stored in the spring in causing (a) the card engaging frame 90 to be compressed against the card and (b) the card cover sheet aperturing operation. After the cutter assembly is allowed to be advanced in its spring urged guide structure and through the card cover sheet by energy supplied from spring 123 (roller 132 now at the deepest point C in the indentation 138 in cam 110 and roller 118 now engaging the point M on cam 111) further rotation of shaft 107 results in the earn 110 retracting the cutter assembly 50 and the roller 118 sharply dropping from the high part of cam 111 to permit this return movement with minimum energy required by the spring. The driving motor is automatically deenergized when shaft 107 rotates through one half /2) of a revolution when the roller 132 cugages the adjacent circular portion E of cam 110 to leave the cam 110 in a position corresponding to that shown in FIGURE 17 to await the next cycle of operations which i9 is initiated by manual closure of a switch 200 now described in connection with FIGURE 4.

In FIGURE 4, the switch 200 is connected in series with the driving motor 101 and is operated in accordance with rotation of the cam 135 on shaft 107, the cam 135 being shown in its normal, at rest, position where one of its two lobes 135A engages the switch actuating element 200A to thereby maintain switch 250 in its open position. The switch 200 is mounted on a lever plate 202 which has an intermediate portion pivoted at pin 203 on support plate 11, has one of its end pins connected at 205 to one end of lever 207 and has the other one of its ends connected through overcenter snap spring 207 to a pin 209 on sup port plate 11. The lever 207 has an intermediate portion pivoted on pin 210 on support plate 11 and its other end connected to a transversely extending actuatingbar 213 so that by depressing the bar 213 the lever plate 202 is pivoted in a counterclockwise direction in FIGURE 4 to cause the spring 207 to snap overcenter to disengage the switch actuating element from cam lobe 135A and to allow the switch 200 to close and thus energize the driving motor causing the cam 135 to rotate in the clockwise direction in FIGURE 4. Due to the fact that the overcenter spring 297 now holds the lever plate 202 in its actuated position the adjustable abutment 212 on lever plate 202 is now in the path of movement of the cam lobe 1353 which then strikes the abutment 212 to cause the lever plate 202 to rotate clockwise during which the spring 207 travels to its overcenter position shown in FIGURE 4 to maintain the switch actuating element 200A in the path of movement of cam lobe 135B so that when these two last mentioned elements engage the switch 200 is opened to deenergize the motor and stop rotation of shaft 107. Thus only one-half of one revolution of shaft 107 is assured to each manual depression of bar 213.

During this one-half revolution of shaft 107 the air pump is also operated, and also by the energy previously stored in spring 123. Thus during the time that the roller 132 enters the indented portion of earn 110, the lever 52 pivots counterclockwise in FIGURE 2 carrying with it the pin 136 upon which the air pump lever 137 is secured by threading it on pin 136 with a washer 136A clamped between it and a shouldered portion of the pin 136 which is thus free to pivot on arm 114. When the upper end of lever 137, more specifically the adjustable screw 142 thereon, engages the stationary bracket 23 the lever 137 pivots in a clockwise direction to cause its lower end to move in engagement with the air pump piston extension 62E to cause an air jet to be produced at nozzle 62A to blow away the rectangular cut out portion of the card cover sheet through the frame aperture 32.

The machine thus using stored energy in a spring to aperture card or card cover sheets assures uniformity of results. Also the cams have long life considering particularly that only the circular portion of cam is fully loaded and pressure on such cam is relieved when the roller 132 engages the indented portion 138 of the earn 110. Of greater significance is the fact that peak power requirements are reduced so that the driving motor may be small and inexpensive, due to low output speed and torque requirements.

While motor operation is preferred it will be appreciated that the cuter may be manually operated using for example a manual operator connected to lever 52 in which case the rod 114 is disconnected from lever 52.

The movable cutter assembly described is particularly useful in each case in progressively cutting that very thin material N which is bonded to that marginal edge portion defining the rectangular apertured portion of card C.

It will be noted that in the present embodiment, double lobe cams are used only to allow the use of very low cost, standard motors. Single or triple lobe cams would provide identical cycling to the device. Further, it can be seen that lever 52 could be rigidly connected to the punch, and operated in circular motion about a lower pivot point.

Also it will be seen that if one inadvertently placed 10 to cards in backwards the punch unit will not drive through the stationary cutting die. The mechanism will go through its cycle, the spring will continue to extend, but will not be able to deliver enough energy to either drive the punch member or damage itself. In other words the spring absorbs this overload. There is no rigid con nection such that the mechanism and motor sees the overload and is subject thereto thereby contributing to a safety feature.

While the particular embodiments of the present invention have been shown and described, it will be obvious to those skilled in the art that changes and modifications may be made without departing from this invention in its broader aspects and, therefore, the aim in the appended claims is to cover all such changes and modifications as fall within the true spirit and scope of this invention.

We claim: 1

1. In apparatus for moving a cutter, a support, a driving shaft rotatably mounted on said support, a first and a second cam on said shaft, an actuating member for a cutter, spring means carried by said member, means cooperating with said first cam and stressing said spring means in increasing amounts in accordance with rotation of said shaft to store increasing amounts of energy in said spring, means cooperating with said second cam for moving said member in one direction, said second cam having an indented portion to allow said member to move in a direction opposite to said one direction under the influence of said energy stored in said spring means.

2. In apparatus for moving a cutter, a support, a driving shaft rotatably mounted on said support, a first and a second cam on said support, an actuating member for a cutter, a first roller slidably and rotatably mounted on said member and engageable with said first cam, a second roller rotatably mounted on said member and engageable with said second cam to move said member in one direction, spring means acting between one end of said member and said first roller and pressing said first roller against said first cam in increasing amounts during rotation of said shaft to store increasing amounts of energy in said spring means, said spring means urging said second roller towards said second cam, and means for connecting the other end of said member to said cutter, said second cam having an indented portion to allow said member to move in a direction opposite to said one direction under the influence of said energy stored in said spring means.

3. In apparatus of the character described, a support, a cutter assembly, means slidably mounting said cutter assembly on said support, a lever having one of its ends pivotally mounted on said support and having its other end pin connected to said cutter assembly, a lever actuating rod having one end pivotally connected to an intermediate portion of said lever, and its other end provided with a spring seat, said rod having a longitudinal slotted portion and two longitudinally spaced transverse slotted portions, a driving shaft rotatable on said support and extending through one of said transverse slotted portions with said rod being slidable on said shaft, a first cam on said shaft within said longitudinal slotted portion, a first roller in said longitudinal slotted portion and rotatably and slidably mounted in the other of said transverse slotted portions, a spring on said rod having one of its ends on said seat and its other end pressing said roller against said cam, a second cam on said shaft, a second roller rotatably mounted on said rod and engageable with said second cam, said second cam having an indented portion within which said second roller is allowed to move.

4. In an apparatus for moving a cutter, a support, a driving shaft rotatably mounted on said support, a first and a second cam on said shaft, an actuating member for a cutter, spring means carried by said member, means cooperating with said first cam and stressing said spring means in accordance with rotation of said shaft, means cooperating with said second cam for moving said member in one direction, said second cam having an indented portion to allow said member to move in a direction op- When it moves in said direction opposite to said one direction for operating said actuating element, said pump means serving to apply pressure to the vicinity of said cutter to blow away cuttings.

5. In apparatus for moving a cutter, a support, a driving shaft rotatably mounted on said support, a first and a second cam on said shaft, an actuating member for a cutter, spring means carried by said member, means cooperating with said first cam and stressing said spring means in accordance with rotation of said shaft, means cooperating with said second cam for moving said member in one direction, said second cam having an indented portion to allow said member to move in a direction opposite to said one direction under the influence of said spring means; a motor for driving said shaft; a control for said motor comprising: a third cam on a shaft having at least one lobe; a rockable support; overcenter spring means maintaining said support in either one of two positions; a switch on said support and having a switch actuating element positionable in the path of said lobe(s) in one of said positions, said support having a member positionable in the path of movement of said lobe(s) in a second of said positions for moving said support from said second to said first position; and manual means for moving said support to said second position.

6. In apparatus for moving a cutter, a support, a driving shaft rotatably mounted on said support, a first and a second cam on said shaft, an actuating member for a cutter, spring means carried by said member, means cooperating with said first cam and stressing said spring means in accordance with rotation of said shaft, means cooperating with said second cam for moving said member in one direction, said second cam having an indented portion to allow said member to move in a direction opposite to said one direction under the influence of said spring means, arnotor for driving said shaft and means carried by said shaft for deenergizing said motor when said means cooperating with said second cam are out of said indented portion.

7.' In apparatus for moving a cutter, a support, a driving shaft rotatably mounted on-saidsupport, a first and a second cam on said shaft, an actuating member for a cutter, spring means carried by' said member, means cooperating with said first cam and stressing said spring means in accordance with rotation of said shaft, means cooperating with said second cam for moving said member in one direction, said second cam having an indented portion to allow said member to move in a direction opposite to said one direction under the influence of said spring means, air pump means operated in response to rotation of said shaft and only when said member is in said indented portion for producing an air blast in the vicinity of said cutter to blow away cuttings.

3. In apparatus for moving a cutter, a support, a driving shaft rotatably mounted on said support, a first and a second cam on said support, an actuating member for a cutter, a first roller slidably and rotatably mounted on said member and engageable with said first cam, a second roller rotatably mounted on said member and engageable with said second ca-m, spring means acting between one end of said member and said first roller and pressing said first roller against said first cam, said spring means urging said second roller towards said second cam, and means for connecting the other end of said member to said cutter, the last mentioned means comprising a lever having one ofits ends pivotally connected to said support, the other one of its ends connected to said cutter and an intermediate portion thereof pivotally connected to said other end of said member, a

pump means on said support, and a second lever pivoted able with said second cam, spring means acting between one end of said member and said first roller and pressing said first roller against said first cam, said spring means urging said second roller towards said second cam, and means for connecting the other end of said member to said cutter, the last mentioned means comprising a lever having one of its ends pivotaliy connected to said support, the other one of its ends connceted to said cutter and an intermediate portion thereof pivot-ally connected to said other end of said member, a pump means on said support, a second lever pivoted on the first mentioned lever and having one of its ends engageable with said pump means and the other one of its ends engageable with said support, and adjustable means between said other end of said second lever and said support.

References Cited by the Examiner UNITED STATES PATENTS 1,191,256 7/1916 Willers 74-55 2,026,849 1/ 1936 Sadgebury 83-586 2,182,744 12/ 1939 Ehrsam 83-98 2,313,525 3/ 1943 Edelman 83-98 2,409,065 10/1946 Pohl 83-586 2,707,996 5/1955 Kalb 83-628 2,818,924 1/1958 Lang 83-685 2,893,489 7/1959 Thompson 83-685 2,955,501 10/1960 Gustine 83-628 2,982,164 5/1961 Ferranti 83-635 2,995,043 8/1961 Lusk 74-97 2,997,907 8/ 1961 Constantine 83-635 3,064,484 11/ 1962 Alsaker 74-97 FOREIGN PATENTS 874,121 7 1942 France.

WILLIAM DYER, 121., Primary Examiner.

ANDREW R, JUHASZ, Examiner. 5 

1. IN APPARATUS FOR MOVING A CUTTER, A SUPPORT, A DRIVEING SHAFT ROTATABLY MOUNTED ON SAID SUPPORT, A FIRST AND A SECOND CAM ON SAID SHAFT, AN ACTUATING MEMBER FOR A CUTTER, SPRING MEANS CARRIED BY SAID MEMBER, MEANS COOPERATING WITH SAID FIRST CAM AND STRESSING SAID SPRING MEANS IN INCREASING AMOUNTS IN ACCORDANCE WITH ROTATION OF SAID SHAFT TO STORE INCREASING AMOUNTS OF ENERGY IN SAID SPRING, MEANS COOPERATING WITH THE SAID SECOND CAM FOR MOVING SAID MEMBER IN ONE DIRECTION, SAID SECOND CAM HAVING AN INDENTED PORTION TO ALLOW SAID MEMBER TO MOVE IN A DIRECTION OPPOSITE TO SAID ONE DIRECTION UNDER THE INFLUENCE OF SAID ENERGY STORED IN SAID SPRING MEANS. 